PTO gearbox

Where can I find some more information about pto gearboxes and how they work. I understand they are very similar to a gog shifter, but how do they power an auxiliary item?

Wait is it just a sprocket that is on the same mount for a dog shifter?

If so where can I buy this part?

RoboShant,

Please email [email protected] and we’ll help you guys out.